Math MCQ Questions with answers

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Here Important Math MCQ questions are added which are frequently asked in almost all the examinations. You can check the correct answer of any question on clicking the show answer button. The Correct answer will be displayed below. You can share any question with your friends on whatsapp by tapping Share button.

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Q. A completes a work in 24 days. After working for 8 days, what fraction of the work is left?

  • (A) 1/3
  • (B) 2/3
  • (C) 3/4
  • (D) 1/4
📝 Notes
✅ Correct Answer: (B) 2/3
Explanation: Completed = 8/24 = 1/3. Remaining = 2/3.

Published by Deepak Sahoo ⭐ 11.23K Points at 21-Jul-2026 06:20 am in Math

Q. A can complete 3/4 of a work in 15 days. In how many days can he complete the whole work?

  • (A) 18 days
  • (B) 20 days
  • (C) 22 days
  • (D) 24 days
📝 Notes
✅ Correct Answer: (B) 20 days
Explanation: Whole work = 15 × 4/3 = 20 days.

Published by Deepak Sahoo ⭐ 11.23K Points at 21-Jul-2026 06:20 am in Math

Q. A can complete a work in 14 days and B in 7 days. Together they will complete the work in:

  • (A) 4 days
  • (B) 4⅔ days
  • (C) 5 days
  • (D) 5⅓ days
📝 Notes
✅ Correct Answer: (B) 4⅔ days
Explanation: Combined rate = 1/14 + 1/7 = 3/14. Time = 14/3 = 4⅔ days.

Published by Deepak Sahoo ⭐ 11.23K Points at 21-Jul-2026 06:20 am in Math

Q. A and B together complete a work in 15 days. If B alone takes 30 days, A alone will take:

  • (A) 20 days
  • (B) 25 days
  • (C) 30 days
  • (D) 45 days
📝 Notes
✅ Correct Answer: (C) 30 days
Explanation: A's rate = 1/15 − 1/30 = 1/30. Hence A takes 30 days.

Published by Deepak Sahoo ⭐ 11.23K Points at 21-Jul-2026 06:20 am in Math

Q. A can complete a work in 48 days while B can complete it in 16 days. If they work together for 8 days, what fraction of the work remains?

  • (A) 1/6
  • (B) 1/3
  • (C) 1/2
  • (D) 2/3
📝 Notes
✅ Correct Answer: (B) 1/3
Explanation: Combined rate = 1/48 + 1/16 = 1/12. In 8 days completed = 2/3. Remaining = 1/3.

Published by Deepak Sahoo ⭐ 11.23K Points at 21-Jul-2026 06:20 am in Math

Q. A can complete a work in 9 days. B is 80% as efficient as A. In how many days can B complete the work?

  • (A) 10 days
  • (B) 11.25 days
  • (C) 12 days
  • (D) 13.5 days
📝 Notes
✅ Correct Answer: (B) 11.25 days
Explanation: B's efficiency = 80% of A. Time = 9/0.8 = 11.25 days.

Published by Deepak Sahoo ⭐ 11.23K Points at 21-Jul-2026 06:20 am in Math

Q. A can complete a work in 50 days and B in 25 days. Their one-day work together is:

  • (A) 2/25
  • (B) 3/50
  • (C) 1/20
  • (D) 1/15
📝 Notes
✅ Correct Answer: (B) 3/50
Explanation: Combined rate = 1/50 + 1/25 = 3/50.

Published by Deepak Sahoo ⭐ 11.23K Points at 21-Jul-2026 06:20 am in Math

Q. A completes a work in 6 days while B completes it in 12 days. Working together, they will complete 3/4 of the work in:

  • (A) 2 days
  • (B) 3 days
  • (C) 4 days
  • (D) 5 days
📝 Notes
✅ Correct Answer: (B) 3 days
Explanation: Combined rate = 1/4. Time for 3/4 work = (3/4) ÷ (1/4) = 3 days.

Published by Deepak Sahoo ⭐ 11.23K Points at 21-Jul-2026 06:20 am in Math

Q. A can complete a work in 11 days and B in 22 days. In how many days will they complete the work together?

  • (A) 6 days
  • (B) 7 days
  • (C) 7⅓ days
  • (D) 8 days
📝 Notes
✅ Correct Answer: (C) 7⅓ days
Explanation: Combined rate = 3/22. Time = 22/3 = 7⅓ days.

Published by Deepak Sahoo ⭐ 11.23K Points at 21-Jul-2026 06:20 am in Math

Q. A can complete 5/8 of a work in 20 days. How many days are required to complete the entire work?

  • (A) 24 days
  • (B) 28 days
  • (C) 30 days
  • (D) 32 days
📝 Notes
✅ Correct Answer: (D) 32 days
Explanation: Whole work = 20 × 8/5 = 32 days.

Published by Deepak Sahoo ⭐ 11.23K Points at 21-Jul-2026 06:20 am in Math

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